phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3410784ae52b468699cf7d1beb4eca57', -1, 1713569918, 1713569918, '038e77f1', -4, 0, 0)

Line : 187
File : sessions.php